55545613 has 8 divisors (see below), whose sum is σ = 59692032. Its totient is φ = 51496896.

The previous prime is 55545601. The next prime is 55545617. The reversal of 55545613 is 31654555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55545613 - 2¹³ = 55537421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55545617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23245 + ... + 25522.

It is an arithmetic number, because the mean of its divisors is an integer number (7461504).

Almost surely, 2^55545613 is an apocalyptic number.

It is an amenable number.

55545613 is a deficient number, since it is larger than the sum of its proper divisors (4146419).

55545613 is a wasteful number, since it uses less digits than its factorization.

55545613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48851.

The product of its digits is 45000, while the sum is 34.

The square root of 55545613 is about 7452.8929282528. The cubic root of 55545613 is about 381.5486500565.

The spelling of 55545613 in words is "fifty-five million, five hundred forty-five thousand, six hundred thirteen".